making it a standard choice for terminal unit control and air handling applications requiring precise pressure-to-stroke ratios

making it a dependable choice for high-demand environments

providing a reliable low limit control solution where electronic sensors may fail

which is vital for accurate sensing

eliminating the risk of universal part vibration or mounting failure

Williams 9304 Vent Extension 320720-756 making it a standard choiceThe Williams 9304 Vent Extension is a critical component for completing through the wall installations of Direct Vent (DV) Wall Furnaces. This 15 inch extension is engineered specifically for the Williams 14038 Series (14,000 BTU models), including compatible Mfr. Nos. 1403821 and 1403822. When standard vent lengths are insufficient due to structural depth, this kit accommodates wall thicknesses from 9 inches up to 15 inches. Constructed from heavy